Casio FX-820MS User's Guide

http://world.casio.com/edu_e/fx-820MSUser's GuideE

E-8Note!•To return the calculation mode and setup to the initialdefaults shown below, press A B 2(Mode) =.Calculation Mode: COMPAngle Unit: DegExponen

E-9k Replay Function• Every time you perform a calculation, the replay functionstores the calculation formula and its result in replaymemory. Pressing

E-10k Exponential Display FormatsThis calculator can display up to 10 digits. Larger valuesare automatically displayed using exponential notation. Int

E-11COMP•Press the number key ( 1 or 2) that corresponds tothe setting you want to use.1(Dot): Period decimal point, comma separator2(Comma): Comma de

E-12152313 15.001315• Example 1:  2 C 3 + 1 C 5 =12• Example 4: 1.6  2.11 C 2 + 1.6 =4 11 12.00• Example 2: 3  1 

E-13uMixed Fraction ↔ Improper FractionConversion• Example: 1 ↔1 C 2 C 3 =A BA B5 3.001 2 3.0053231 2 3.00•You can use the display setup (D

E-14• Example 4 : To discount 3500 by 25% (2625)3500 - 25 A v ,• Example 5 : To discount the sum of 168, 98, and 734 by20%(800)168 + 98 + 734 = g A

E-15• Example 2: To perform the following calculation:12°34’56”  3.4512 I 34 I 56 I - 3.45 =43°24°31.2k FIX, SCI, RND•To change the settings for th

E-16COMP• Example 2: 1  3, displaying result with two significantdigits (Sci 2)F... 2(Sci) 2 1 \ 3 =3.3–01SCI•Press F ...3(Norm) 1 to clear the S

E-17k Independent Memory•Values can be input directly into memory, added tomemory, or subtracted from memory. Independentmemory is convenient for calc

CASIO ELECTRONICS CO., LTD.Unit 6, 1000 North Circular Road,London NW2 7JD, U.K.

E-18COMPScientific FunctionCalculationsUse the F key to enter the COMP Mode when youwant to perform basic arithmetic calculations.COMP ...

E-19• Example 4: tan1 0.741  36.53844577 °q ... 1 (Deg)A g 0.741 =k Hyperbolic/Inverse HyperbolicFunctions• Example 1: sinh 3.6  18.28545536M S 3

E-20• Example 2:35  3 27  –1.290024053A D 5 + A D R D 27 T =• Example 6:  12R 3 a , 4 a T a =1  13 41• Example 4: 123  3

E-21• Example: To c o nv e r t 4.25 radians to degreesq ... 1(Deg)4.25 A v 2(R) =k Coordinate Conversion (Pol (x, y),Rec (r, θ ))• Calculation resu

E-22SDREGSDStatisticalCalculationsStandard DeviationUse the F key to enter the SD Mode when you wantto perform statistical calculations using standard

E-23•S S inputs the same data twice.•You can also input multiple entries of the same datausing A G. To input the data 110 ten times, for example,press

E-24Press 2 to exit data input without registering the valueyou just input.Press 1 if you want to register the value you just input,without saving it

E-25•Always start data input with A B 1 (Scl) = to clearstatistical memory.•Input data using the key sequence shown below.<x-data> P <y-data&

E-26• The values in the above tables can be used inside ofexpressions the same way you use variables.uLinear Regression• The regression formula for li

E-27Coefficient of Determination = 0.965517241A X r r 3 K =Sample Covariance = 35E A U r 3 ,A U 3 - A X 1 -A X r 1 F \E A U 3 , 1 F =uLogarithmic, Exp

E-1

E-28Regression Coefficient C = – 6.71629667 10 –3A X r r 3 =n when xi is 16 = –13.3829106716 A X r r r 3 =m1 when yi is 20 = 47.1455672820 A X r r r

E-29Math ERROR•Causes• Calculation result is outside the allowable calculationrange.• An attempt to perform a function calculation using avalue that e

E-30k Order of OperationsCalculations are performed in the following order of prec-edence.1 Coordinate transformation: Pol (x, y), Rec (r, θ )2 Type A

E-31k StacksThis calculator uses memory areas, called “stacks,” to tem-porarily store values (numeric stack) and commands (com-mand stack) according t

E-32k Input RangesInternal digits: 12Accuracy*: As a rule, accuracy is ±1 at the 10th digit.Functions Input Rangesinx DEG 0 x 4.4999999991010RAD

E-33Functions Input RangenCr0 n  11010, 0 r  n (n, r are integers)1 [n!/{r!(n–r)!}]  110100Pol(x, y)x, y 9.9999999991049(x2+y2) 9.99999

E-34Power SupplyThe TWO WAY POWER system actually has two powersupplies: a solar cell and a G13 Type (LR44) button battery.Normally, calculators equip

E-35Auto Power OffCalculator power automatically turns off if you do notperform any operation for about six minutes. When thishappens, press 5 to tur

SA0205-A Printed in ChinaCASIO COMPUTER CO., LTD.6-2, Hon-machi 1-chomeShibuya-ku, Tokyo 151-8543, Japan

E-2Safety PrecautionsBe sure to read the following safety precautions beforeusing this calculator. Keep this manual handy for laterreference.CautionTh

E-3• The displays and illustrations (such as key markings)shown in this User’s Guide are for illustrative purposesonly, and may differ somewhat from t

E-4Take care never to leave the calculator where it might besplashed by water or exposed to large amounts of hu-midity or dust. Such conditions can da

E-5ContentsSafety Precautions ... 2Handling Precautions ... 3Two-line Display ...

E-6kAngle Unit Conversion .... 20kCoordinate Conversion (Pol (x, y), Rec (r, θ )) ... 21kEngineering Notation C

E-7The two-line display makes it possible to viewboth the calculation formula and its result atthe same time.• The upper line shows the calculation fo